Bolting-up device



C. G. REVENY. BOLTING UP DEVICE. APPLICATION FILED MAR. l5. 1920.

UNITED STATES PATENT oFFicE.

BOLIING-UP DEVICE.

Speccation of Letters Patent.

Patented Mar. 15, 1921.

Application filed March 15, 1920. Serial No. 366,053.

To aZZ whom it may concern.'

Be it known that I, CHAnLiis G. REvENY, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented a new and useful Improvement in Bolting- Up Devices, of which the following is a specification.

My invention relates to improvements in bolting-up devices wherein a bolt is temporarily secured to retain contact of two or more plates or elements to be bolted or riveted together.

This invention is an improvement on my device disclosed in my copending application led the 24th day of February, 1920, Serial No. 361,352, reference to which application is hereby made.

The main object of the present invention is to provide means for reducing the cost of the bolting up device hereinabove referred to wherein a bolt having a latch is inserted through the plates or members to be secured and is operated by a single operator from one side of the work 0r structure only, both in applying as well as in removing the bolts after the riveting process is completed.

In my copending application a cam plate is used to engage and retain one end of the bolt and to exert suicient pressure upon the members to be secured to retain contact of said members during the riveting process.

In the present invention the cam plate or impinging cam is only used for the initial process of drawing the plates together and for holding the bolt while a cheaper form of temporary securing means is inserted.

It is also an object of the present invention to provide a cheaper form of bolt having a maximum efficiency.

I accomplish these several objects by means of the device disclosed in the drawings forming a part of the present specification wherein like characters of reference are used to designate similar parts throughout the said specification and drawings,and in which- Figure 1 is a side elevation of my improved bolt, partly in section, and showing the latch in a registering position;

Fig. 2 is a similar view disclosing the latch in a laterally projecting or securing position;

Fig. 3 is a side elevation of my improved device as applied to two plates or members to be connected, the position of the cam in the impinging position being disclosed in dotted lilies;

Fig. 4 is a horizontal sectional view of Fig. showing the cam in the impinging position disclosed in dotted lines in Fig. 3 of the drawings; and Fig. 5 is a front elevation of the impinging cam.

Referring to the drawings my improved bolt consists of an ordinary unthreaded bolt 1 having the head 2 thereof provided with oppositely positioned arcuate portions 3, the purpose of which will hereinafter be more fully described.

The bolt 1 is provided nearly throughout the length thereof with a longitudinally disposed slot 4 within which is slidably and rotatably mounted a latch 6 by means of laterally extending lugs 7 mounted on said latch 6 and extending into a shorter longitudinally disposed slot 8 within the bolt 1 and at right angles to the slot 4 therein, the

osition of said slot 8 being' such that when the latch is laterally extending from the slot 4 and impinging against the outer end thereof the lugs 7 will be in spaced relation relatively to the ends of the slots 8 thereby preventing exposure of the lugs 7 to a shearing strain when the latch 6 is impinged against the end of the slot 4, as disclosed in Fig. 3 of the drawings.

The latch 6 is provided with an extension 9 on one end thereof to engage a recess 11 adjacent one end of the slot 4 to retain registration bolt 1 while in one position whereby said bolt 1 and latch 6 may be readily inserted to alined or registered apertures or holes 14 and 15 in members 16 and 17 to be riveted or otherwise permanently secured together.

A bifurcated arcuate cam 18 is arranged to straddle the bolt 1 the outerl surfaces or peripheries being arranged to impinge against one of the elements or members to be connected and the inner surfaces of said bifurcated cam 18 being arranged to engage the arcuate surfaces or portions 3 of the bolt head 2 as disclosed in Fig. 3 of the drawings. I

Rotation of the cam 18 about the axis or center of the'arcuate portions 3 of the bolts head 2 will cause said inner surfaces of said bifurcated cam 18 to move the bolt of the latch 4 with the members 16 and and thereby impinge the the opposite side of the 17 and move members tightly together.

Vhen the members 16 and 17 aremoved tightly together a wedge 19 is placed within the end of the slot f1 of said bolt 1 adjacent the head end of said bolt and impinged tightly and securely between the end of the slot 4. and the nearest member-to be secured.

The bifurcated cam 18 is `then released from the bolthead 2 and applied to the next bolt yto'be secured.

In this manner the cam 18 is used as a tool instead of being left as a securing means. As the wedges 19" are cheaper and more easily handled than the bifurcated cam it is obviousV that a lgreat* reduction in expense as well as a great lessening in the weight to betransported where a number of bolts are to be used, is, obtained by the provision of 1 longitudinally latch 6 against the wedge 19,` in place of the cam 18, as

' temporary securing means.

Y Y end thereof.

, and thereby provide 'W'.ashers 20 may be placed between the we ge 19 and plate 17 to build upvand fill the space between the adjacent face of the member 17 and the wedge 19 thereby facilitating Ithe-use of short Wedges, the only displacement of thev `wedge being required under this arrangement, being slightly greater than the thickness of one washer 20.

By means of this improvement one operator may readily bolt up plates Ywhere only one side is accessible to said operator, as the bolt'with'its registered latch Gmay be easily inserted from the operators side ofthe work. After insertion, a partial or substantially-half rotation of the bolt will p gravity to extend the the sides of the bolt an obstruction on the Aopposite sideY of the worlr from the operator whereby said bolt may be prevented from being extracted when the securing means are positioned and operated on the opposite permit the action of latch laterally from In removing ythe bolts it is only necessary to again partially rotate the same until the latch 6 falls into registration with the bolt 1, as disclosed in F ig. lV ofthe drawings, when the said bolt l may be easily withdrawn.

It is obvious from Y have provided an improved means for temporarily securingV together plates and other or clamp said end of the slot opposite the latch and gage and retain saidmembers against said the foregoing that I y,

members vto be finally permanently riveted or otherwise connected, said means being adaptable to insertion and operation from one side of the work only and easily and readily manipulated by a sole operator.

Having thus described my invention what I claim as new and desire to secure by Iletteis Patent is` 1. A bolting-up device comprising a longitudinally slotted bolt; a latch movably mounted within one end of said slot'and adapted to register with' the bolt when in one position and to extend laterally from said bolt when thesame is'inanother position; means for engagingy the end of the bolt opposite the latch and for moving members to be clamped against said latch when extended; anda wedge arranged to engage the end of the slot opposite the latch and to move and temporarily retain said members against said latch.

2.' A bolting up device comprising a longitudinally slotted bolt having arcuate portions forined on the innerside of the head of said bolt; a latch inovably mounted within one end of said slot and arranged to reg'- ister therewith when the bolt is in one position and to be extended laterally from said bolt when in another position; means for engaging' the arcuate portions of 'the bolt head for mevingp'vmembers to be clamped sition and to be extended laterally from said bolt when in another position; means .for engaging the arcuate 'portions of the bolt head for moving members to be clamped Y against the latch when extended; and a wedge adapted to be inserted within the toenlatch.

In witness whereof I hereunto Vset my signature.

' CHARLES eniavnnr. 

